Actinium
| Use attributes for filter ! | |
| Symbol | Ac |
|---|---|
| Atomic number | 89 |
| Electron configuration | [Rn] 6d17s2 |
| Element category | Actinide, sometimes considered a transition metal |
| Electrons per shell | 2, 8, 18, 32, 18, 9, 2 |
| Did you know | Actinium was discovered in 1899 by André-Louis Debierne, a French chemist. |
| Date of Reg. | |
| Date of Upd. | |
| ID | 961530 |
About Actinium
Actinium is a chemical element with the symbol Ac and atomic number 89. It was first isolated by French chemist André-Louis Debierne in 1899. Friedrich Oskar Giesel later independently isolated it in 1902 and, unaware that it was already known, gave it the name emanium.
Actinium Photos
